四年级下册 运算律（笔算）
姓名：_______________
学号：_______________
用时：_______________
| 44 + 38 + 28 = (44 + __) + 28 | (5 + 9) × 4 = 20 + __ |
| 25 + 11 + 30 = (25 + __) + 30 | 16 + 13 = 13 + __ |
| (5 + 7) × 3 = 15 + __ | 95 × 6 = (100 - __) × 6 |
| 60 × 4 = 4 × __ | 92 + 92 = 92 + __ |
| 8 + 10 + 24 = (8 + __) + 24 | 97 × 6 = 100 × 6 - __ × 6 |
| 28 × 3 = 3 × __ | 80 + 40 = 40 + __ |
| (12 + 8) × 2 = 24 + __ | (1 + 11) × 2 = 2 + __ |
| 11 + 69 = 69 + __ | 53 + 97 = 97 + __ |
| 45 + 10 + 48 = (45 + __) + 48 | 26 + 25 + 22 = (26 + __) + 22 |
| (1 + 6) × 7 = 7 + __ | 98 × 6 = 100 × 6 - __ × 6 |
| 47 × 3 = 3 × __ | 67 + 81 = 81 + __ |
| 97 × 9 = (100 - __) × 9 | 37 × 8 = 8 × __ |
| (1 + 8) × 4 = 4 + __ | 58 + 84 = 84 + __ |
| 97 × 9 = (100 - __) × 9 | 49 + 36 = 36 + __ |
| 98 × 7 = (100 - __) × 7 | (20 + 1) × 4 = 80 + __ |
| 95 × 8 = (100 - __) × 8 | 5 + 16 + 46 = (5 + __) + 46 |
| 12 + 32 + 49 = (12 + __) + 49 | 10 × 2 = 2 × __ |
| 29 + 44 + 14 = (29 + __) + 14 | (7 + 6) × 5 = 35 + __ |
四年级下册 运算律（笔算）（答案）
姓名：_______________
学号：_______________
用时：_______________
| 44 + 38 + 28 = (44 + __) + 28 38 | (5 + 9) × 4 = 20 + __ 36 |
| 25 + 11 + 30 = (25 + __) + 30 11 | 16 + 13 = 13 + __ 16 |
| (5 + 7) × 3 = 15 + __ 21 | 95 × 6 = (100 - __) × 6 5 |
| 60 × 4 = 4 × __ 60 | 92 + 92 = 92 + __ 92 |
| 8 + 10 + 24 = (8 + __) + 24 10 | 97 × 6 = 100 × 6 - __ × 6 3 |
| 28 × 3 = 3 × __ 28 | 80 + 40 = 40 + __ 80 |
| (12 + 8) × 2 = 24 + __ 16 | (1 + 11) × 2 = 2 + __ 22 |
| 11 + 69 = 69 + __ 11 | 53 + 97 = 97 + __ 53 |
| 45 + 10 + 48 = (45 + __) + 48 10 | 26 + 25 + 22 = (26 + __) + 22 25 |
| (1 + 6) × 7 = 7 + __ 42 | 98 × 6 = 100 × 6 - __ × 6 2 |
| 47 × 3 = 3 × __ 47 | 67 + 81 = 81 + __ 67 |
| 97 × 9 = (100 - __) × 9 3 | 37 × 8 = 8 × __ 37 |
| (1 + 8) × 4 = 4 + __ 32 | 58 + 84 = 84 + __ 58 |
| 97 × 9 = (100 - __) × 9 3 | 49 + 36 = 36 + __ 49 |
| 98 × 7 = (100 - __) × 7 2 | (20 + 1) × 4 = 80 + __ 4 |
| 95 × 8 = (100 - __) × 8 5 | 5 + 16 + 46 = (5 + __) + 46 16 |
| 12 + 32 + 49 = (12 + __) + 49 32 | 10 × 2 = 2 × __ 10 |
| 29 + 44 + 14 = (29 + __) + 14 44 | (7 + 6) × 5 = 35 + __ 30 |